Journal
PHYSICAL REVIEW B
Volume 79, Issue 24, Pages -Publisher
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevB.79.245321
Keywords
chaos; nanostructured materials; quantum dots; spin dynamics; spin-orbit interactions; Zeeman effect
Funding
- Ikerbasque Foundation
- University of Basque Country [GIU07/40]
- Ministry of Education and Science RF [2.1.1.2686, 2.1.1.3778, 2.2.2.2/4297]
- RFBR [09-02-1241-a]
- USCRDF [BP4M01]
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The coupled nonlinear coordinate and spin dynamics of an electron in a double quantum dot with spin-orbit interaction is studied semiclassically. The system is driven by an electric field with the frequency matching the orbital or the Zeeman resonance in magnetic field. Calculated evolution of the spin state is crucially sensitive to the irregularities in the spatial motion and the geometry of the host nanostructure. The resulting spin-flip Rabi frequency has an unusual dependence on the field amplitude, demonstrating an approach to the chaotic spin motion. In turn, the orbital dynamics depends strongly on the spin evolution due to the spin-dependent term in the electron velocity.
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